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For the HIDs when you say DRL do you mean Auto headlight? if so then it is deffinitely the same bulb. If not then a test to make sure it is or isnt the same bulb would be put a mirror in front of headlights that you can see from car. Turn on car so DRL comes on, then pay attention as you turn on the headlights and see if light is from a different area or not. Also do the same from the front of the car.